Symmetry energy of fragments produced in multifragmentation

Abstract : Isospin properties of fragments measured in multifragmentation of $^{136}$Xe and $^{124}$Xe projectiles in mid-peripheral collisions with a lead target at 1 A GeV were studied within the statistical approach describing the liquid-gas nuclear phase transition. By analyzing the isoscaling phenomenon and the mean N-over-Z ratio of the fragments with Z=10-13 we have concluded that the symmetry energy of hot fragments produced at subnuclear densities at high temperatures decreases in comparison with cold nuclei.
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D. Henzlova, A.S. Botvina, K.-H. Schmidt, V. Henzl, P. Napolitani, et al.. Symmetry energy of fragments produced in multifragmentation. Journal of Physics G: Nuclear and Particle Physics, IOP Publishing, 2010, 37 (8), pp.085010. ⟨10.1088/0954-3899/37/8/085010⟩. ⟨in2p3-00024375⟩

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